#!/bin/sh
# PCP QA Test No. 1874
# Exercise newer pmseries expressions and functions
# via the REST API.
#
# Copyright (c) 2020 Red Hat.  All Rights Reserved.
#

seq=`basename $0`
echo "QA output created by $seq"

# get standard environment, filters and checks
. ./common.product
. ./common.filter
. ./common.check

_check_series

_cleanup()
{
    cd $here
    [ -n "$pmproxy_pid" ] && $signal -s TERM $pmproxy_pid
    [ -n "$options" ] && redis-cli $options shutdown
    if $need_restore
    then
	need_restore=false
	_restore_config $PCP_SYSCONF_DIR/pmseries
	_restore_config $PCP_SYSCONF_DIR/pmproxy
    fi
    $sudo rm -rf $tmp $tmp.*
}

status=0	# success is the default!
signal=$PCP_BINADM_DIR/pmsignal

userid=`id -u`
groupid=`id -g`
username=`id -u -n`
hostname=`hostname`
machineid=`_machine_id`
domainname=`_domain_name`

need_restore=false
$sudo rm -rf $tmp $tmp.* $seq.full
trap "_cleanup; exit \$status" 0 1 2 3 15

_filter_source()
{
    sed \
	-e "s,$here,PATH,g" 
    # end
}

_filter_url()
{
    sed \
	-e "s,localhost:$proxyport/,localhost:PROXYPORT/," \
    # end
}

_curl_get()
{
    url="$1"
    echo "$url" | tee -a $seq.full | _filter_url
    curl --get --silent "$url" | pmjson | tee -a $seq.full
}

# real QA test starts here
_save_config $PCP_SYSCONF_DIR/pmproxy
_save_config $PCP_SYSCONF_DIR/pmseries
$sudo rm -f $PCP_SYSCONF_DIR/pmseries/*
$sudo rm -f $PCP_SYSCONF_DIR/pmproxy/*
need_restore=true

echo "Start test Redis server ..."
redisport=`_find_free_port`
echo "redisport=$redisport" >>$seq.full
redis-server --port $redisport > $tmp.redis 2>&1 &
echo "PING"
pmsleep 0.125
options="-p $redisport"
redis-cli $options ping
echo

# import some well-known test data into Redis
pmseries $options --load "$here/archives/proc" | _filter_source

# start pmproxy 
proxyport=`_find_free_port`
echo "proxyport=$proxyport" >>$seq.full
proxyopts="-p $proxyport -r $redisport -t"  # -Dseries,http,af
pmproxy -f -U $username -x $tmp.err -Dseries,query -l $tmp.pmproxy.log $proxyopts &
pmproxy_pid=$!

# check pmproxy has started and is available for requests
pmcd_wait -h localhost@localhost:$proxyport -v -t 5sec

if [ -f $tmp.err ]
then
    echo "Arrgh: errors from Redis server startup ..."
    cat $tmp.err
fi

$PCP_PS_PROG $PCP_PS_ALL_FLAGS | grep pmproxy >> $seq.full
redis-cli $options keys pcp:* >> $seq.full
cat $tmp.pmproxy.log >> $seq.full

# Sanity check
series1=`pmseries $options disk.all.read`
[ -z "$series1" ] && _fail "Cannot find any timeseries matching disk.all.read"

#
# REST API queries using newer expression syntax and functions
#

echo "== verify series sum (a + b) SID lookup" | tee -a $seq.full
echo "kernel.all.load + kernel.all.load"
expr="kernel.all.load%20%2B%20kernel.all.load"
_curl_get "http://localhost:$proxyport/series/query?expr=$expr"

echo "== verify series sum (a + b) with samples" | tee -a $seq.full
echo "kernel.all.load[samples:1] + kernel.all.load[samples:1]"
expr="kernel.all.load%5Bsamples%3A1%5D%20%2B%20kernel.all.load%5Bsamples%3A1%5D"
_curl_get "http://localhost:$proxyport/series/query?expr=$expr"

echo "== verify series sum (a + b) with samples by SID" | tee -a $seq.full
echo "kernel.all.load + kernel.all.load"
sid="16aa36d93e5cd0733499eee7dafc07dbb2ad7067"
_curl_get "http://localhost:$proxyport/series/values?series=$sid&samples=1"
_curl_get "http://localhost:$proxyport/series/descs?series=$sid"
_curl_get "http://localhost:$proxyport/series/metrics?series=$sid"
_curl_get "http://localhost:$proxyport/series/instances?series=$sid"

# For debugging
# echo === pause for gdb -p $pmproxy_pid Log is $tmp.pmproxy.log ===
# read something

echo "== verify series difference (a - b) SID lookup" | tee -a $seq.full
echo "kernel.all.load - kernel.all.load"
expr="kernel.all.load%20-%20kernel.all.load"
_curl_get "http://localhost:$proxyport/series/query?expr=$expr"

echo "== verify series difference (a - b) with samples" | tee -a $seq.full
echo "kernel.all.load[samples:1] - kernel.all.load[samples:1]"
expr="kernel.all.load%5Bsamples%3A1%5D%20%2B%20kernel.all.load%5Bsamples%3A1%5D"
_curl_get "http://localhost:$proxyport/series/query?expr=$expr"

echo "== verify series difference (a - b) with samples by SID" | tee -a $seq.full
echo "kernel.all.load - kernel.all.load"
sid="f29c38f54d5a3cb928496439760634617688036b"
_curl_get "http://localhost:$proxyport/series/values?series=$sid&samples=1"
_curl_get "http://localhost:$proxyport/series/descs?series=$sid"
_curl_get "http://localhost:$proxyport/series/metrics?series=$sid"
_curl_get "http://localhost:$proxyport/series/instances?series=$sid"


echo "== verify series function (floor(a)) SID lookup" | tee -a $seq.full
echo "floor(kernel.all.load)"
expr="floor%28kernel.all.load%29"
_curl_get "http://localhost:$proxyport/series/query?expr=$expr"

echo "== verify series function (floor(a)) with samples" | tee -a $seq.full
echo "floor(kernel.all.load[samples:2])"
expr="floor%28kernel.all.load%5Bsamples%3A2%5D%29"
_curl_get "http://localhost:$proxyport/series/query?expr=$expr"

echo "== verify series function (floor(a)) with samples by SID" | tee -a $seq.full
echo "floor(kernel.all.load)"
sid="f2dbf7a113932b3371c8871df932603856d1d7b6"
_curl_get "http://localhost:$proxyport/series/values?series=$sid&samples=2"
_curl_get "http://localhost:$proxyport/series/descs?series=$sid"
_curl_get "http://localhost:$proxyport/series/metrics?series=$sid"
_curl_get "http://localhost:$proxyport/series/instances?series=$sid"


# success, all done
exit
